Submarine radio system



-- P. E. sToGoFF.

SUBMARINE RADIO SYSTEM.

ArrucArloN men ma. 2o. 191s. 1,343, 165. Patented June 8, 1920.

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J* al :1g kn I ips UNITED -STATES PATENT OFFICE.

PETER E. STOGOFF, OF NEW YORK, N. Y.

SUBMARINE RADIO SYSTEM.

Application filed February 20, 1918.

To all whom it may concern:

Be it known that I, PETER E. STOGOFF, a citizen of Russia, residing at 517 )Vest 113th street, city, county, and State of New York, have invented a Submarine Radio System, of which the following is a specification.

My invention relates to processes of under-water radio communication and the taking of radio bearings from submarines, ships or aeroplanes, by means of highly 1nsulated antennae, in some cases, and insulated antennae in others.

I attain the processes by the apparatus, mechanism and arrangement illustrated in the accompanying drawings.

Figure 1 is a lateral view of the sending and receiving station of a submarine equipped for this method of communication.

Fig. 2 is the horizontal view of the antenna used in Fig. 1.

Fig. 3 is a lateral view of the loop antenna described herein.

For under-water radio communication for a submarine the apparatus used consists of any standard generator of undamped waves, shown in Fig. 1, which feeds a highly insulated antenna (B) Fig. 1, and any relay key or hand key, or microphone.

The antenna for this purpose is a loop antenna (D) Fig. 3.

The loop antenna (D) as shown in Fig. 3, consists of one or several loops (d1) the lower part of which (cl2) passes into the hull of the submarine, the antenna being fastened to the mast Fig. 3 and Fig. 1, which is installed upon the conning tower between the periscopes. The size of the loops depends upon the size of the ship, the kind of generator and the range and accuracy required.

At the place (F) Fig. 1 where the antenna enters the hull a protection against me chanical injury is arranged.

Vhen necessary a small additional mast (g) Fig. 1 is placed at each end of the boat.

The large mast (G) may be of changeable length.

The receiving station Fig. 1 consists of the same antenna, any standard receiver with a small generator and an amplifier' of any type.

For taking radio bearings from a submarine the loop antenna is used, the radio bearing being taken by causing the submarine to turn a circle and recording the minimum sound in the receiver. Any kind of receiver Specification of Letters Patent.

Patented June 8, 1920.

serial No. 218,238.

may be used if used with the generator and amplifier.

I claim:

l. A system for sending and receiving radio signals with the same station under and above water and for takin@F radio bea-r- WW' ings under and abofe""water, consisting of highly insulated looped antenna fed by a generator of undamped waves and supported as near the surface of the Water as practicable and exterior to and separate from the hull of a submarine, means for supporting said antenna as near the surface of the water as practicable, and exterior to and separate from said hull, means for feeding said antenna and for sending and receiving signals including a generator of undamped waves and amplifier and receiver and means for preventing any possible interference by the presence of the metallic hull with the antenna at the points where said antenna enters said hull.

2. In a system for sending and receiving radio signals with the same station under and above water and for taking radio bearings under and above water of the character described, a combination of highly insulated looped antenna fed by a generator of undamped waves and supported as near the surface of the water as practicable and exterior to and separate from the hull of a submarine, means for supporting said antenna as near the surface of the water as practicable, and exterior to and separate from said hull, means for feeding said antenna and for sending signals including a generator of undamped waves, means for receiving signals including amplifier and receiver and means for preventing interference by the presence of the metallic hull with the antenna at the point where said antenna enters said hull.

3. In a system for receiving and sending radio signals with the same station under and above water and for taking radio bearing under and above water of the character described, highly insulated looped antenna fed by a generator of undamped waves and supported as near the surface of the water as practicable and exterior to and separate from the hull of a submarine and protected against interference by the presence of the metalic hull, means for supporting said antenna as near the surface of the water as practicable and exterior to and separate from the said hull a generator of undamped Waves for feeding said antenna, means for sending and receiving signals including amplifier, and means for preventing any inter ference by the presence of the metallic hull with the antenna at the points Where said antenna enters said hull.

4C. In a system for sending and receiving radio signals with the same station under and above Water and for taking radio bearing under and above Water of the character described, highly insulated looped antenna fed by a generator of nndaniped Waves and supported as near the surface of the Water as practicable and exteriorl to the hull of a submarine and separate from said hull,

means for feeding said antenna and for sending signals including a generator of undamped waves, means for receiving signals including an amplifier and receiver, masts of suitable construction and of suitable length and of suitable number for sup porting said antenna as near the surface of the Water as practicable and eX- terior to and separate from the liull ol said submarine, and means for avoiding any interference by the presence of the metallic hull of said submarine with said antenna at the points Where said antenna enters said 

